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              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_RoughOpeningLength_49in_1_75256fa7e5.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_RoughOpeningLength_49in_1_75256fa7e5.html"
        },
        {
          "name": "Overall Width",
          "values": [
            {
              "value": "50 3/4 in",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_OverallWidth_5034in_1_2935c20a2e.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_OverallWidth_5034in_1_2935c20a2e.html"
        },
        {
          "name": "Fits Fan Diameter",
          "values": [
            {
              "value": "48 in",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_FitsFanDiameter_48in_1_0aca873b39.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_FitsFanDiameter_48in_1_0aca873b39.html"
        },
        {
          "name": "For Nominal Duct Diameter",
          "values": [
            {
              "value": "Not Applicable",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ForNominalDuctDiameter_NotApplicable_1_0c4ff900fb.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ForNominalDuctDiameter_NotApplicable_1_0c4ff900fb.html"
        },
        {
          "name": "Item",
          "values": [
            {
              "value": "Universal Backdraft Damper",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_Item_UniversalBackdraftDamper_1_3e4e7c0879.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_Item_UniversalBackdraftDamper_1_3e4e7c0879.html"
        },
        {
          "name": "Shutter Mounting Position",
          "values": [
            {
              "value": "Vertical",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ShutterMountingPosition_Vertical_1_2ed3085e0c.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ShutterMountingPosition_Vertical_1_2ed3085e0c.html"
        },
        {
          "name": "Shutter Mounting Location",
          "values": [
            {
              "value": "Wall",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ShutterMountingLocation_Wall_1_f1eae6e969.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ShutterMountingLocation_Wall_1_f1eae6e969.html"
        },
        {
          "name": "Shutter Construction Material",
          "values": [
            {
              "value": "Extruded Aluminum Frame and G-90 Galvanized Tie Rods",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ShutterConstructionMaterial_ExtrudedAluminumFrameandG90GalvanizedTieRo_1_aba32cbcbf.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_ShutterConstructionMaterial_ExtrudedAluminumFrameandG90GalvanizedTieRo_1_aba32cbcbf.html"
        },
        {
          "name": "Shutter Free Area",
          "values": [
            {
              "value": "12.323 sq ft",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ShutterFreeArea_12323sqft_1_9530676797.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ShutterFreeArea_12323sqft_1_9530676797.html"
        },
        {
          "name": "Shutter Opening Required",
          "values": [
            {
              "value": "49 in x 49 in",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ShutterOpeningRequired_49inx49in_1_1f7bdcbc0c.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ShutterOpeningRequired_49inx49in_1_1f7bdcbc0c.html"
        },
        {
          "name": "Blade Material",
          "values": [
            {
              "value": "Aluminum",
              "url": "/python/html5/menu_attr_pair/1000/1000000/1561000/menu_attr_pair_BladeMaterial_Aluminum_1_5a527f4db8.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000000/1561000/menu_attr_pair_BladeMaterial_Aluminum_1_5a527f4db8.html"
        },
        {
          "name": "Max  Velocity",
          "values": [
            {
              "value": "2250 FPM",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_MaxVelocity_2250FPM_1_45fb18dd6b.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_MaxVelocity_2250FPM_1_45fb18dd6b.html"
        },
        {
          "name": "ASIN",
          "values": [
            {
              "value": "B000LEDL3I",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ASIN_B000LEDL3I_1_347e9cc31d.html"
            },
            {
              "value": "B07HLTQT48",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ASIN_B07HLTQT48_1_915cf55e83.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ASIN_B000LEDL3I_1_347e9cc31d.html"
        },
        {
          "name": "AdultProduct",
          "values": [
            {
              "value": "False",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_AdultProduct_False_1_c6441ece7c.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_AdultProduct_False_1_c6441ece7c.html"
        },
        {
          "name": "Amount",
          "values": [
            {
              "value": "381.99",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Amount_38199_1_3bb912e902.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Amount_38199_1_3bb912e902.html"
        },
        {
          "name": "Asin",
          "values": [
            {
              "value": "B000LEDL3I",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ASIN_B000LEDL3I_1_347e9cc31d.html"
            },
            {
              "value": "B07HLTQT48",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ASIN_B07HLTQT48_1_915cf55e83.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ASIN_B000LEDL3I_1_347e9cc31d.html"
        },
        {
          "name": "Autographed",
          "values": [
            {
              "value": "False",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Autographed_False_1_3dfa18ce7d.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_Autographed_False_1_3dfa18ce7d.html"
        },
        {
          "name": "Batteries_required",
          "values": [
            {
              "value": "False",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Batteriesrequired_False_1_87e9780f06.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_Batteriesrequired_False_1_87e9780f06.html"
        },
        {
          "name": "Brand",
          "values": [
            {
              "value": "CAI - DAYTON",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Brand_CAIDAYTON_1_652423cbd8.html"
            },
            {
              "value": "Dayton",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Brand_Dayton_1_0d2fd0b16e.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Brand_CAIDAYTON_1_652423cbd8.html"
        },
        {
          "name": "Bullet_point",
          "values": [
            {
              "value": "For Use With: Vertical Mounted Supply Fans",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Bulletpoint_ForUseWithVerticalMountedSupplyFans_1_b6f930b61f.html"
            },
            {
              "value": "Item: Backdraft Damper / Intake Shutter",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4979000/menu_attr_pair_Bulletpoint_ItemBackdraftDamperIntakeShutter_1_5b8d456faf.html"
            },
            {
              "value": "Mounting Hole Size: Prepunched",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Bulletpoint_MountingHoleSizePrepunched_1_1bfaaea799.html"
            },
            {
              "value": "Shutter Item: Backdraft Damper / Intake Shutter",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Bulletpoint_ShutterItemBackdraftDamperIntakeShutter_1_0779565316.html"
            },
            {
              "value": "Shutter Opening Required: 49\" x 49\"",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Bulletpoint_ShutterOpeningRequired49x49_1_d1e93b0108.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Bulletpoint_ForUseWithVerticalMountedSupplyFans_1_b6f930b61f.html"
        },
        {
          "name": "Case",
          "values": [
            {
              "value": "1",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Case_1_1_4de75d695a.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_Case_1_1_4de75d695a.html"
        },
        {
          "name": "Cat",
          "values": [
            {
              "value": "Industrial & Scientific",
              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_Cat_IndustrialScientific_1_c583162a01.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_Cat_IndustrialScientific_1_c583162a01.html"
        },
        {
          "name": "CatId",
          "values": [
            {
              "value": "16310091",
              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatId_16310091_1_0f77fb0abe.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatId_16310091_1_0f77fb0abe.html"
        },
        {
          "name": "CatTree",
          "values": [
            {
              "value": "16310091",
              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatTree_16310091_1_b11243d9cb.html"
            },
            {
              "value": "16310161",
              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatTree_16310161_1_0db56bb8c8.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatTree_16310091_1_b11243d9cb.html"
        },
        {
          "name": "ClassificationId",
          "values": [
            {
              "value": "10304191",
              "url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_ClassificationId_10304191_1_31fb8e807c.html"
            },
            {
              "value": "16310161",
              "url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_ClassificationId_16310161_1_87b10d6c0a.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_ClassificationId_10304191_1_31fb8e807c.html"
        },
        {
          "name": "CurrencyCode",
          "values": [
            {
              "value": "USD",
              "url": "/python/html5/menu_attr_pair/1000/62000/menu_attr_pair_CurrencyCode_USD_1_a688e6506c.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/62000/menu_attr_pair_CurrencyCode_USD_1_a688e6506c.html"
        },
        {
          "name": "DisplayName",
          "values": [
            {
              "value": "Categories",
              "url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_DisplayName_Categories_1_f0aa662226.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_DisplayName_Categories_1_f0aa662226.html"
        },
        {
          "name": "Finish_type",
          "values": [
            {
              "value": "Powder Coated",
              "url": "/python/html5/menu_attr_pair/1000/75000/menu_attr_pair_Finishtype_PowderCoated_1_6f8471a0b1.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/75000/menu_attr_pair_Finishtype_PowderCoated_1_6f8471a0b1.html"
        },
        {
          "name": "Height",
          "values": [
            {
              "value": "1052",
              "url": "/python/html5/menu_attr_pair/1000/188000/menu_attr_pair_Height_1052_1_b30de5c92d.html"
            },
            {
              "value": "2.0",
              "url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Height_20_1_a8500c4566.html"
            },
            {
              "value": "2.00",
              "url": "/python/html5/menu_attr_pair/1000/103000/menu_attr_pair_Height_200_1_82f2b6878b.html"
            },
            {
              "value": "500",
              "url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_Height_500_1_e800e4b696.html"
            },
            {
              "value": "52.0",
              "url": "/python/html5/menu_attr_pair/1000/251000/menu_attr_pair_height_520_1_e9e070813c.html"
            },
            {
              "value": "52.00",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4979000/menu_attr_pair_Height_5200_1_57c5336329.html"
            },
            {
              "value": "75",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Height_75_1_a0092a3e31.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/188000/menu_attr_pair_Height_1052_1_b30de5c92d.html"
        },
        {
          "name": "Identifier",
          "values": [
            {
              "value": "0696333230445",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Identifier_0696333230445_1_fa1f400f29.html"
            },
            {
              "value": "696333230445",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Identifier_696333230445_1_a07efea9dc.html"
            },
            {
              "value": "7438455984782",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Identifier_7438455984782_1_068b5fc51c.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Identifier_0696333230445_1_fa1f400f29.html"
        },
        {
          "name": "IdentifierType",
          "values": [
            {
              "value": "EAN",
              "url": "/python/html5/menu_attr_pair/1000/3000/menu_attr_pair_IdentifierType_EAN_1_0a7a698752.html"
            },
            {
              "value": "UPC",
              "url": "/python/html5/menu_attr_pair/1000/61000/menu_attr_pair_IdentifierType_UPC_1_477407fdb7.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/3000/menu_attr_pair_IdentifierType_EAN_1_0a7a698752.html"
        },
        {
          "name": "ItemClassification",
          "values": [
            {
              "value": "BASE_PRODUCT",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_ItemClassification_BASEPRODUCT_1_21c06575b2.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_ItemClassification_BASEPRODUCT_1_21c06575b2.html"
        },
        {
          "name": "ItemName",
          "values": [
            {
              "value": "Dayton 48\" Backdraft Damper/Intake Shutter, 49\" x 49\" Opening Required",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ItemName_Dayton48BackdraftDamperIntakeShutter49x49O_1_d96a976b8f.html"
            },
            {
              "value": "Fan Shutter, 48 In, Mill Finish Aluminum,",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ItemName_FanShutter48InMillFinishAluminum_1_ba1060168e.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_ItemName_Dayton48BackdraftDamperIntakeShutter49x49O_1_d96a976b8f.html"
        },
        {
          "name": "Item_name",
          "values": [
            {
              "value": "Dayton 48\" Backdraft Damper/Intake Shutter, 49\" x 49\" Opening Required",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Itemname_Dayton48BackdraftDamperIntakeShutter49x49O_1_f3c4161b05.html"
            },
            {
              "value": "Fan Shutter, 48 In, Mill Finish Aluminum,",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4981000/menu_attr_pair_Itemname_FanShutter48InMillFinishAluminum_1_2816a87dde.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Itemname_Dayton48BackdraftDamperIntakeShutter49x49O_1_f3c4161b05.html"
        },
        {
          "name": "Item_package_quantity",
          "values": [
            {
              "value": "1",
              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_Itempackagequantity_1_1_10213d6c40.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_Itempackagequantity_1_1_10213d6c40.html"
        },
        {
          "name": "Item_type_keyword",
          "values": [
            {
              "value": "industrial-products",
              "url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Itemtypekeyword_industrialproducts_1_36a5164e3c.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Itemtypekeyword_industrialproducts_1_36a5164e3c.html"
        },
        {
          "name": "Item_weight",
          "values": [
            {
              "value": "0.01",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Itemweight_001_1_0ee39db994.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_Itemweight_001_1_0ee39db994.html"
        },
        {
          "name": "Keyword",
          "values": [
            {
              "value": "4YN19",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Keyword_4YN19_1_8922598bfa.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Keyword_4YN19_1_8922598bfa.html"
        },
        {
          "name": "Label",
          "values": [
            {
              "value": "CAI - DAYTON",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Label_CAIDAYTON_1_773c3bbb24.html"
            },
            {
              "value": "DAYTON",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Label_Dayton_1_2d14d631ad.html"
            },
            {
              "value": "Dayton",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Label_Dayton_1_2d14d631ad.html"
            },
            {
              "value": "Dayton Electric Manufacturing Co.",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4972000/menu_attr_pair_Label_DaytonElectricManufacturingCo_1_0b4f8c1e3a.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Label_CAIDAYTON_1_773c3bbb24.html"
        },
        {
          "name": "Length",
          "values": [
            {
              "value": "2.0",
              "url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Length_20_1_9313541e58.html"
            },
            {
              "value": "2.00",
              "url": "/python/html5/menu_attr_pair/1000/158000/menu_attr_pair_Length_200_1_4f61f3f6db.html"
            },
            {
              "value": "50.75",
              "url": "/python/html5/menu_attr_pair/1000/1000000/1942000/menu_attr_pair_Length_5075_1_cb6ae3c90b.html"
            },
            {
              "value": "51.3",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_length_513_1_675460bce1.html"
            },
            {
              "value": "51.30",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Length_5130_1_ae0685b502.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Length_20_1_9313541e58.html"
        },
        {
          "name": "Link",
          "values": [
            {
              "value": "https://m.media-amazon.com/images/I/413ux953Y0L._SL75_.jpg",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Link_httpsmmediaamazoncomimagesI413ux953Y0LSL75_1_2546ad5588.html"
            },
            {
              "value": "https://m.media-amazon.com/images/I/413ux953Y0L.jpg",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4980000/menu_attr_pair_Link_httpsmmediaamazoncomimagesI413ux953Y0Ljpg_1_3939c3e947.html"
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